and Larus delawarensis, were the only ones seen. In the evening the two above species (?) and an adult Larus occidentalis were seen. When SW of Goat Island this morning a fine adult Stercorarius pomarinus flew over the steamer going southward. It a band across the anterior portion of the breast. Aug. 29, 1907. Alameda to and from San Francisco, Cal. Conditions :- Overcast; neet wind; moderate tempera- ture. In the morning there was not much beach exposed near the roundhouse but what little was had a good number of Larus californicus on it. An Ardea herodias was standing in the shallow water as the train passed. Many of the gulls flew up during its closeness to the train. In the evening a few Larus californicus, both adult and immature, were seen while crossing the bay. When off Goat Island, we saw two gulls flying close to the water like Larus heermanni. Near the mole this evening I saw a Reter- actitis means. Aug. 30, 1907. Alameda to and from San Francisco, Cal.